Dark mode nav bar is still light

[c00]

When viewing the documentation in darkmode, the navbar is still light. Tho the content of the navbar seems to be prepared for darkmode.

To reproduce:

1. set your browser to prefer dark mode,
2. go to e.g. https://typeorm.io/

What you see:

What I'd expect:

Browser used: Firefox
Active extension: uBlock origin

[c00]

I was curious and was able to easily hunt down the issue.

The original css has a @supports (-webkit-backdrop-filter: blur(6px)) or (backdrop-filter: blur(6px)) query, within which is the styling for the navbar, including the dark mode styling.

However, firefox does not support the backdrop filter, which is why the styling was never applied.

Adjusted, the site looks like this: